William h



(No Model.)

W. AYARS.

NUT LOOK.

,749. Patented Dec. 18, 1888.

WITA'L'SSES.

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UNITED STATES PATENT OFFICE.

VILLIAM H. H. AYARS, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF TO JOHN C. ERTEL, OF SAME PLACE.

NUTHLOCK.

SPECIFICATION forming part of Letters Patent No. 394,749, dated December 18, 1888.

Application filed May 8, 1888.

To all whom, t may concern,.-

Be it knownthat I, \VILLIAM H. H. AYARs, a citizen of the United States, residing at Indianapolis, in the county of Marion and State ot' Indiana, have invented certain new and useful Improvements in Nut-Locks, of which the following vis a specification.

The object ot' my said invention is to produce an et'ticient lock for one or more nuts after they have been turned up to place on the bolt-s on which they are used. Said lock consists in the peculiar.' construction and arrangement hereinafter more particularly described and claimed.

Referring to the accompanyingl drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l a perspective view of the ends of two railroad-rails secured together in the ordinary manner and the nuts locked in position by means ot' my invention; Fig. 2, a side elevation of the same, the bolts and nuts,

and also the stud carrying the locking-plates,

being cut in section, as indicated bythe dotted line 2 2 in Fig. B; Fig. '3, a horizontal sectional view on the dotted line Il Si in Fig. 2, and Fig. 4 a detail view oi one ot' the lockin g-plates separatel v.

In said dra.\\f'ings,the portions marked A represent the railrmtd-rails; l, the tish-platcs by which said rails are connected C, the bolts which pass through said rails and said vfishplates; I), a long washer, which I prefervto use as a base Vfor the locking-plates, which constitute the principal feature of my invention, (although said plates maybe mounted directly on thc lish-platesQ and E, said locking-plates.

The rails, fish-plates, and bolts are of course of the ordinary or any desired construction and need no special. description herein, and I may here remark that this invention is not conlined to railroad uses, and consequently7 any other construction showing the bolts and nuts in position where the nuts may be locked equally within the scope of my invention.

As before stated, I prefer to use the long washer D, which extends over the several bolts and lies against the fish-plates; but instead the studs d, upon which the locking'- plates are mounted, might be formed directly Serial No. 273,252. (No model.)

l on the fish-plates or secured thereto without departing from my invention. However, by using' the separate washer, as shown, the invention may be applied to joints already in use without any labor, except that incident to placing' the lock in position.

The locking-plates E are simply plain metallic plates having longitudinal slots, as shown, and notches extending toward one side 6o from said slots, which are adapted to slip down over the studs d and lock the plates in position. The ends of these plates, which rest against the nuts, may be turned up, it' desired.

The method of applying' my invention is as follows: The nuts being removed, the washer D, carrying the locking-plates, is placed over the ends of the bolts, the locking-plates being arranged centrally between said bolts. The 7o locking-plates are slipped out toward said nuts, and, being so constructed that when their ends come against the faces on the nuts the notches in the slots will just register with the studs on which said plates are mounted, they then drop down, so that said notches pass over said studs, whereby they are held in position, and the nuts then cannot work or be turned ott' until said plates are raised up and slipped back away Vfrom them. In order 8o that the plates may be held firmly in their position against the nuts, said nuts may, after they have been so placed, be given a slight backward turn, which will bring them forcibly against the ends of the plates, which will then be securely held, as will be readily understood. y This may be aided by recessingthe end of the plates slightly, as shown most plainly in Fig. 4, so that the corner ot' the nuts may engage with the slight projections thus 9o formed.

Ot course it will be Areadily understood that when there is but one nut to lock but one of the locking-plates will be necessary, and also, while I have illustrated the lock in connection with a railroad-rail andits nuts, yet it is equally as serviceable in locking many other kinds of nuts in connection with other 1necl1- anism, the lock constituting the invention inanism on which it may be used.

Having thus fully described my said inven-v dependently of any particular variety of mech- 1 oo tion, what I Claim as new7 and desire to secure hy Letters Patent, is

1. The eoinbilmtion, with :L bolt and its nut, ot' n locking-plate having' n longitudinal slot with a` notch or offset :it one side7 and uv stud adjacent to said nut, upon which said lock.- 'ng-plnte is mounted und over which it is per initted, by ineans of said slot, to slide toward and from the nut in the operation of looking and unlocking the suine, and said noteh or olset being` adopted to lit over said stud, hereby said platte may be secured from slidingthereon when in position to leek, the nut, substantially als set forth.

2. The eonihinition ot' :L longI washer nlnpted to lit over the ends ot' bolts und pro- Vide'd with et stud between said bolts, :md two looking-plates inounted upon said stud, @oeh of whieh is provided with zt longitudinal slot hating n noteh in one side, said plates being; adapted to be moved first n ninst the sides ot' t-he nuts :ind then down, so that the notches therein will engage with the stud n-nd hold theni in that position, snhstznitinlly :is set forth.

In witness whereofl l have hereunto set my hand and seul, uit lndinmtpolis, Indiano, this l-th day ot' Moy, A. D. ISSR. 

